按执行时间使用倒序的方式排序找出 TOP 10 的慢查询SQL
t_slow.sql
use MySQL;
select * from
(select * from slow_log where start_time >= '2016-08-01 00:00:01' order by query_time desc) a
limit 10;
mysql -u root -p -e "source t_slow.sql" > t_slow.txt
按锁定时间使用倒序的方式排序找出 TOP 10 的慢查询SQL
l_slow.sql
use mysql;
select * from
(select * from slow_log where start_time >= '2016-08-01 00:00:01' order by lock_time desc) a
limit 10;
mysql -u root -p -e "source l_slow.sql" > l_slow.txt
按输出的行数使用倒序的方式排序找出 TOP 10 的慢查询SQL
r_slow.sql
use mysql;
select * from
(select * from slow_log where start_time >= '2016-08-01 00:00:01' order by rows_sent desc) a
limit 10;
mysql -u root -p -e "source r_slow.sql" > r_slow.txt
按执行次数使用倒序的方式排序找出 TOP 10 的慢查询SQL
c_slow.sql
use mysql;
select * from
(select sum(query_time),avg(query_time),sum(lock_time),avg(lock_time),
sum(rows_sent),avg(rows_sent),sum(rows_examined),avg(rows_examined),
count(1),sql_text from slow_log where start_time >= '2016-08-01 00:00:01'
group by sql_text order by count(1) desc) a
limit 10;
mysql -u root -p -e "source c_slow.sql" > c_slow.txt
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